package org.alex.samples.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.alex.samples.model.ExamUserVO;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class Loginlnterceptor implements HandlerInterceptor {

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		System.out.println("------------LoginInterceptor.afterCompletion()-----------------");
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		System.out.println("------------LoginInterceptor.postHandle()-----------------");
		
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception {
		HttpSession session=request.getSession();
		ExamUserVO  examUser=(ExamUserVO) session.getAttribute("examUser");
		if(examUser !=null){
			return true;
		}else{
			response.sendRedirect(request.getContextPath()+"/login");
		}
		System.out.println("您好！您还没有登录，请登录后再使用，谢谢！");
		System.out.println("------------LoginInterceptor.preHandle()-----------------");
		return false;
	}

}
